241 research outputs found

    Oportunidades de colaboración entre farmacia hospitalaria y comunitaria

    Get PDF

    Oportunidades de colaboración entre farmacia hospitalaria y comunitaria

    Get PDF

    Prevalence and morphometric analysis of idiopathic osteosclerosis in a Chilean population

    Get PDF
    Background: The aim of this study was to analyse the prevalence and morpho­metric parameters of idiopathic osteosclerosis (IO) in a Chilean population. IO is an intraosseous growth of compact, benign, unilocular, non-expandable bone that is referred to as an anatomical variation. Materials and methods: A cross-sectional study was performed using 1000 digital panoramic radiographs of adults in which data on the location (maxillary/ mandibular, right/left hemiarcades), shape, position to the dental apex, and the prevalence of IOs were observed in relation to gender and age. The morphometric parameters evaluated were area, height, width, and the linear distances of the IO up to the midline and at the base of the mandible. Results: The overall prevalence was 2.8% (27 individuals), with the majority of cases in women (66.7%) in the second, third, and fifth decades of life, but without significant differences. All cases were present in the mandible (100%), usually in the left hemiarcade (59.3%), molar (48.2%) and premolar (44.4%) regions; at the height of the dental apices (65.5%), with an irregular shape (40.7%) and round (37%). The area of the IOs was 33.9 ± 20.1 mm2, with a height of 7.7 ± ± 3.1 mm, width of 6.6 ± 3.1 mm, and the distance from the IO to the mandible median line was 26.6 ± 10.7 mm and 9.7 ± 3.7 mm to the mandibular base. Conclusions: All the data observed corroborate with previous studies; the IO does not present a large difference in the Chilean population evaluated compared to pre­vious studies carried out in other populations. (Folia Morphol 2018; 77, 2: 272–278

    Bilateral bifid mandibular canal: a case report using cone beam computed tomography

    Get PDF
    The mandibular canal (MC) originates in the mandibular foramen and runs bilaterally through the mandibular ramus and body, ending in the mental foramen. One of the most common anatomical variations is bifid MC, the configurations of which have been classified into four categories and sub-categories. The prevalence of these variations depends on the imaging method used. Studies carried out in panoramic X-rays and cone beam computed tomography (CBCT) showprevalences varying between 1% and 20%. In this case report we present the finding of a bilateral bifid MC by CBCT examination; we describe its location and morphological characteristics. The variation found was a type 1 bilateral bifid MC, which consists in an accessory canal originating from a single mandibular foramen and extending to the third molar or its immediate surroundings. In this report we discuss the importance of detecting these anatomical variations, as well as their implications in clinical practice

    Desarrollo de un sistema predictivo de potencia fotovoltaica para su utilización en sistemas híbridos

    Get PDF
    En el trabajo se desarrolla un sistema predictivo de potencia para paneles foto voltaicos (FV) utilizando el concepto de series temporales y lógica difusa. La predicción de la potencia FV puede ser de gran utilidad, debido a que muchos sistemas implementan esta tecnología como una de sus principales fuentes de energía y anticiparse a la potencia que puede generar el conjunto de paneles FV, determina la energía con la que contará el sistema. El sistema desarrollado predice los próximos 5 valores de potencia FV por delante, uno por minuto. La potencia FV es predicha en función de la irradiancia y la temperatura de celda de los paneles FV. Para cada variable se utiliza un sistema de lógica difusa, desarrollado como una función que permite predecir una magnitud cinco minutos posteriores. Cada sistema ingresa como variable de entrada cinco valores de irradiancia y cinco valores de temperatura, consecutivos con un tiempo de muestreo de un minuto. Cada bloque utiliza un sistema de aprendizaje que ajusta la base de conocimiento de los sistemas difusos, utilizando dos años y medio de datos medidos para la irradiancia y un año y medio de medida para la temperatura de celda. Con la información que entregan los bloques, puede determinarse la potencia del panel FV. El trabajo utiliza la irradiancia como variable de entrada, debido a que esta magnitud por lo general tiene un importante historial de información. El tiempo de predicción se debe a que el sistema se desarrolla para mejorar la acción de conexión de un sistema híbrido FV-grupo electrógeno. En el trabajo se observan diferentes medidas, las cuales permiten concluir que el sistema desarrollado muestra una adecuada precisión en la predicción mencionada.A predictive power system for photovoltaic (PV) is developed using the concept of time series and fuzzy logic in this paper. The prediction of PV power can be very useful, because many systems implement this technology as one of their main sources of energy. Also anticipate the power generated by the set of PV panels, and determines the available energy. The developed system predicts the next five PV power values ahead, one every minute. The PV power is predicted based on the irradiance and cell temperature of the PV panels. For each variable, a fuzzy logic system is used, developed as a function that predicts a magnitude five minutes later. Each system import as input variable, five values of irradiance and five values of temperature, consecutive with a sampling time of one minute. Each block uses a learning system that adjusts the knowledge base of fuzzy systems, using two and a half years of measurements for the irradiance and one and a half years of measurements for the cell temperature. With the information what provide the blocks, it possible to determine the power of the PV panel. The paper uses the irradiance as an input variable, because this magnitude usually has significant history information. The action of connecting a generator set FV-hybrid can be improved, if set through the system this “time prediction”. Different sizes are observed in this article to conclude that the developed system shows adequate accuracy in predicting said.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES
    corecore